mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
343 lines
8.7 KiB
C++
343 lines
8.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is Unicode case conversion helpers.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corp..
|
|
* Portions created by the Initial Developer are Copyright (C) 2002
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Alec Flett <alecf@netscape.com>
|
|
* Benjamin Smedberg <benjamin@smedbergs.us>
|
|
* Ben Turner <mozilla@songbirdnest.com>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#include "nsUnicharUtils.h"
|
|
#include "nsUnicharUtilCIID.h"
|
|
|
|
#include "nsCRT.h"
|
|
#include "nsICaseConversion.h"
|
|
#include "nsServiceManagerUtils.h"
|
|
#include "nsXPCOMStrings.h"
|
|
#include "casetable.h"
|
|
|
|
#include <ctype.h>
|
|
|
|
// For gUpperToTitle
|
|
enum {
|
|
kUpperIdx =0,
|
|
kTitleIdx
|
|
};
|
|
|
|
// For gUpperToTitle
|
|
enum {
|
|
kLowIdx =0,
|
|
kSizeEveryIdx,
|
|
kDiffIdx
|
|
};
|
|
|
|
#define IS_ASCII(u) ( 0x0000 == ((u) & 0xFF80))
|
|
#define IS_ASCII_UPPER(u) ((0x0041 <= (u)) && ( (u) <= 0x005a))
|
|
#define IS_ASCII_LOWER(u) ((0x0061 <= (u)) && ( (u) <= 0x007a))
|
|
#define IS_ASCII_ALPHA(u) (IS_ASCII_UPPER(u) || IS_ASCII_LOWER(u))
|
|
#define IS_ASCII_SPACE(u) ( 0x0020 == (u) )
|
|
|
|
#define IS_NOCASE_CHAR(u) (0==(1&(gCaseBlocks[(u)>>13]>>(0x001F&((u)>>8)))))
|
|
|
|
// Size of Tables
|
|
|
|
#define CASE_MAP_CACHE_SIZE 0x40
|
|
#define CASE_MAP_CACHE_MASK 0x3F
|
|
|
|
struct nsCompressedMap {
|
|
const PRUnichar *mTable;
|
|
PRUint32 mSize;
|
|
PRUint32 mCache[CASE_MAP_CACHE_SIZE];
|
|
PRUint32 mLastBase;
|
|
|
|
PRUnichar Map(PRUnichar aChar)
|
|
{
|
|
// no need to worry about thread safety since cached values are
|
|
// not objects but primitive data types which could be
|
|
// accessed in atomic operations. We need to access
|
|
// the whole 32 bit of cachedData at once in order to make it
|
|
// thread safe. Never access bits from mCache directly.
|
|
|
|
PRUint32 cachedData = mCache[aChar & CASE_MAP_CACHE_MASK];
|
|
if(aChar == ((cachedData >> 16) & 0x0000FFFF))
|
|
return (cachedData & 0x0000FFFF);
|
|
|
|
// try the last index first
|
|
// store into local variable so we can be thread safe
|
|
PRUint32 base = mLastBase;
|
|
PRUnichar res = 0;
|
|
|
|
if (( aChar <= ((mTable[base+kSizeEveryIdx] >> 8) +
|
|
mTable[base+kLowIdx])) &&
|
|
( mTable[base+kLowIdx] <= aChar ))
|
|
{
|
|
// Hit the last base
|
|
if(((mTable[base+kSizeEveryIdx] & 0x00FF) > 0) &&
|
|
(0 != ((aChar - mTable[base+kLowIdx]) %
|
|
(mTable[base+kSizeEveryIdx] & 0x00FF))))
|
|
{
|
|
res = aChar;
|
|
} else {
|
|
res = aChar + mTable[base+kDiffIdx];
|
|
}
|
|
} else {
|
|
res = this->Lookup(0, (mSize/2), mSize-1, aChar);
|
|
}
|
|
|
|
mCache[aChar & CASE_MAP_CACHE_MASK] =
|
|
(((aChar << 16) & 0xFFFF0000) | (0x0000FFFF & res));
|
|
return res;
|
|
}
|
|
|
|
PRUnichar Lookup(PRUint32 l,
|
|
PRUint32 m,
|
|
PRUint32 r,
|
|
PRUnichar aChar)
|
|
{
|
|
PRUint32 base = m*3;
|
|
if ( aChar > ((mTable[base+kSizeEveryIdx] >> 8) +
|
|
mTable[base+kLowIdx]))
|
|
{
|
|
if( l > m )
|
|
return aChar;
|
|
PRUint32 newm = (m+r+1)/2;
|
|
if(newm == m)
|
|
newm++;
|
|
return this->Lookup(m+1, newm , r, aChar);
|
|
|
|
} else if ( mTable[base+kLowIdx] > aChar ) {
|
|
if( r < m )
|
|
return aChar;
|
|
PRUint32 newm = (l+m-1)/2;
|
|
if(newm == m)
|
|
newm++;
|
|
return this->Lookup(l, newm, m-1, aChar);
|
|
|
|
} else {
|
|
if(((mTable[base+kSizeEveryIdx] & 0x00FF) > 0) &&
|
|
(0 != ((aChar - mTable[base+kLowIdx]) %
|
|
(mTable[base+kSizeEveryIdx] & 0x00FF))))
|
|
{
|
|
return aChar;
|
|
}
|
|
mLastBase = base; // cache the base
|
|
return aChar + mTable[base+kDiffIdx];
|
|
}
|
|
}
|
|
};
|
|
|
|
static nsCompressedMap gUpperMap = {
|
|
reinterpret_cast<const PRUnichar*>(&gToUpper[0]),
|
|
gToUpperItems
|
|
};
|
|
|
|
static nsCompressedMap gLowerMap = {
|
|
reinterpret_cast<const PRUnichar*>(&gToLower[0]),
|
|
gToLowerItems
|
|
};
|
|
|
|
void
|
|
ToLowerCase(nsAString& aString)
|
|
{
|
|
PRUnichar *buf = aString.BeginWriting();
|
|
ToLowerCase(buf, buf, aString.Length());
|
|
}
|
|
|
|
void
|
|
ToLowerCase(const nsAString& aSource,
|
|
nsAString& aDest)
|
|
{
|
|
const PRUnichar *in;
|
|
PRUnichar *out;
|
|
PRUint32 len = NS_StringGetData(aSource, &in);
|
|
NS_StringGetMutableData(aDest, len, &out);
|
|
NS_ASSERTION(out, "Uh...");
|
|
ToLowerCase(in, out, len);
|
|
}
|
|
|
|
void
|
|
ToUpperCase(nsAString& aString)
|
|
{
|
|
PRUnichar *buf = aString.BeginWriting();
|
|
ToUpperCase(buf, buf, aString.Length());
|
|
}
|
|
|
|
void
|
|
ToUpperCase(const nsAString& aSource,
|
|
nsAString& aDest)
|
|
{
|
|
const PRUnichar *in;
|
|
PRUnichar *out;
|
|
PRUint32 len = NS_StringGetData(aSource, &in);
|
|
NS_StringGetMutableData(aDest, len, &out);
|
|
NS_ASSERTION(out, "Uh...");
|
|
ToUpperCase(in, out, len);
|
|
}
|
|
|
|
#ifdef MOZILLA_INTERNAL_API
|
|
|
|
PRInt32
|
|
nsCaseInsensitiveStringComparator::operator()(const PRUnichar* lhs,
|
|
const PRUnichar* rhs,
|
|
PRUint32 aLength) const
|
|
{
|
|
return CaseInsensitiveCompare(lhs, rhs, aLength);
|
|
}
|
|
|
|
PRInt32
|
|
nsCaseInsensitiveStringComparator::operator()(PRUnichar lhs,
|
|
PRUnichar rhs) const
|
|
{
|
|
// see if they're an exact match first
|
|
if (lhs == rhs)
|
|
return 0;
|
|
|
|
lhs = ToLowerCase(lhs);
|
|
rhs = ToLowerCase(rhs);
|
|
|
|
if (lhs == rhs)
|
|
return 0;
|
|
else if (lhs < rhs)
|
|
return -1;
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
#endif // MOZILLA_INTERNAL_API
|
|
|
|
PRInt32
|
|
CaseInsensitiveCompare(const PRUnichar *a,
|
|
const PRUnichar *b,
|
|
PRUint32 len)
|
|
{
|
|
NS_ASSERTION(a && b, "Do not pass in invalid pointers!");
|
|
|
|
if (len) {
|
|
do {
|
|
PRUnichar c1 = *a++;
|
|
PRUnichar c2 = *b++;
|
|
|
|
if (c1 != c2) {
|
|
c1 = ToLowerCase(c1);
|
|
c2 = ToLowerCase(c2);
|
|
if (c1 != c2) {
|
|
if (c1 < c2) {
|
|
return -1;
|
|
}
|
|
return 1;
|
|
}
|
|
}
|
|
} while (--len != 0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
PRUnichar
|
|
ToLowerCase(PRUnichar aChar)
|
|
{
|
|
if (IS_ASCII(aChar)) {
|
|
if (IS_ASCII_UPPER(aChar))
|
|
return aChar + 0x0020;
|
|
else
|
|
return aChar;
|
|
} else if (IS_NOCASE_CHAR(aChar)) {
|
|
return aChar;
|
|
}
|
|
|
|
return gLowerMap.Map(aChar);
|
|
}
|
|
|
|
void
|
|
ToLowerCase(const PRUnichar *aIn, PRUnichar *aOut, PRUint32 aLen)
|
|
{
|
|
for (PRUint32 i = 0; i < aLen; i++) {
|
|
aOut[i] = ToLowerCase(aIn[i]);
|
|
}
|
|
}
|
|
|
|
PRUnichar
|
|
ToUpperCase(PRUnichar aChar)
|
|
{
|
|
if (IS_ASCII(aChar)) {
|
|
if (IS_ASCII_LOWER(aChar))
|
|
return aChar - 0x0020;
|
|
else
|
|
return aChar;
|
|
} else if (IS_NOCASE_CHAR(aChar)) {
|
|
return aChar;
|
|
}
|
|
|
|
return gUpperMap.Map(aChar);
|
|
}
|
|
|
|
void
|
|
ToUpperCase(const PRUnichar *aIn, PRUnichar *aOut, PRUint32 aLen)
|
|
{
|
|
for (PRUint32 i = 0; i < aLen; i++) {
|
|
aOut[i] = ToUpperCase(aIn[i]);
|
|
}
|
|
}
|
|
|
|
PRUnichar
|
|
ToTitleCase(PRUnichar aChar)
|
|
{
|
|
if (IS_ASCII(aChar)) {
|
|
return ToUpperCase(aChar);
|
|
} else if (IS_NOCASE_CHAR(aChar)) {
|
|
return aChar;
|
|
}
|
|
|
|
// First check for uppercase characters whose titlecase mapping is
|
|
// different, like U+01F1 DZ: they must remain unchanged.
|
|
if (0x01C0 == (aChar & 0xFFC0)) {
|
|
for (PRUint32 i = 0; i < gUpperToTitleItems; i++) {
|
|
if (aChar == gUpperToTitle[(i*2)+kUpperIdx]) {
|
|
return aChar;
|
|
}
|
|
}
|
|
}
|
|
|
|
PRUnichar upper = gUpperMap.Map(aChar);
|
|
|
|
if (0x01C0 == ( upper & 0xFFC0)) {
|
|
for (PRUint32 i = 0 ; i < gUpperToTitleItems; i++) {
|
|
if (upper == gUpperToTitle[(i*2)+kUpperIdx]) {
|
|
return gUpperToTitle[(i*2)+kTitleIdx];
|
|
}
|
|
}
|
|
}
|
|
|
|
return upper;
|
|
}
|